What if I'm not fine ?

I was trying to get pregnant for quite some time and I'm only 22 and we finally did it ๐Ÿ™Œ๐Ÿฝ๐Ÿ™Œ๐Ÿฝ๐Ÿ™Œ๐Ÿฝ but it haven't been rainbows ๐ŸŒˆ and unicorns ๐Ÿฆ„ ๐Ÿ˜– I'm only 5 weeks pregnant and I getting cramps and backache not so good also lots and lots of headaches (tension) . I went to the ER and doctor said I was fine but yet I'm getting these really bad cramps. I'm soo worried something might not be fine. Please help! ๐Ÿ˜ฉโค๏ธ